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v3.19.1

Share-based Payments - Summary of Outstanding Warrants (Detail) - $ / shares | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |
Number of warrants | 25,457,623 | 38,654,654 | 45,885,172
Weighted average exercise price | $ 0.26 | $ 0.24 | $ 0.24
Warrants Grant Date October Eight Two Thousand Fifteen To October Twenty Eight Two Thousand Fifteen [Member] |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |
Expiry date | October 8, 2020 - October 28, 2020 |  |
Number of warrants | 4,586,785 |  |
Weighted average exercise price | $ 0.31 |  |
Warrants Grant Date May Thirteen Two Thousand Sixteen To May Twenty Seven Two Thousand Sixteen [member] |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |
Expiry date | May 13, 2021 - May 27, 2021 |  |
Number of warrants | 20,870,838 |  |
Weighted average exercise price | $ 0.25 |  |

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- Definition Number of warrants outstanding. + References No definition available. + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Details
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